Ok, I know, it's 15 days early but, I made the previously mentioned changes, just now. I will know more in about two hours, as a couple of FA@H WU's finish up. Meanwhile, I did get one additional CEP2 WU as soon as I forced an update.

By this time, or sooner, tomorrow, I should know if the changes will work for me. WOW, while typing this, I got another CEP2 download!

Anyways, I will probably keep it, if it works, and be running full speed by the time these challenges roll around. Actually, I might throw a few SNTS's in once it gets up and rolling. I don't have any of their badges. Once we get closer to the challenge, I will re-opt out for the durations.

Maybe it's just me, but CEP2s seem to bring me more points per minute than any other WU.

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These days, that would be true to my boxen, no doubt. With SN2S bringing a little bit under what CEP2 does and FAAH giving downright bad points.
But, there's always a huge BUT. CEP2 tends to error out en-masse every once in a while, wasting a lot of CPU time this way; sometimes over 90 hours of CPU time gets wasted at once on an octacore.
Because of that, SN2S produces more net points than CEP2. FAAH is still behind CEP2, even after considering those CEP2 errors.

In fact, I never get computation problems with CEP2 (I had issues with ClimatePrediction and GPU work for DistrRTgen and Einstein@home for a bit though, but that's not WCG related). CEP2 WUs are hot however (max sys load by BOINC being lowered to 90% makes matters do-able though), and not friendly to all networks so I can still imagine they are not everyone's friend.

Ok I registered and joined the techpowerup team. Downloaded that and everything, it started "say no to schistoma" automatically. Temps are hanging around 35c so thats fine. Have it set to 80% load on CPU

Ok I registered and joined the techpowerup team. Downloaded that and everything, it started "say no to schistoma" automatically. Temps are hanging around 35c so thats fine. Have it set to 80% load on CPU

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You're running at all defaults now- keep it running like that for awhile and...

Ok I registered and joined the techpowerup team. Downloaded that and everything, it started "say no to schistoma" automatically. Temps are hanging around 35c so thats fine. Have it set to 80% load on CPU

Surprisingly (and sadly), SN2S gives the best points/hr. No magic increase in PPD for us by forcing to one project. In fact, if you switch to pure CEP2 for the challenge, expect a drop to about ~93% your normal PPD.

In fact, I never get computation problems with CEP2 (I had issues with ClimatePrediction and GPU work for DistrRTgen and Einstein@home for a bit though, but that's not WCG related).
"Normally" CEP2 runs perfectly fine. But there are several conditions when they start to error out for some reason. 1) Running many CEP2 units at the same time. When all of my cores work on CEP2, sometimes the running ones all simply error out at the very same time. 2) In case of heavy disk IO (i.e. if CEP2 has to do a bit waiting on its own IO).

CEP2 WUs are hot however (max sys load by BOINC being lowered to 90% makes matters do-able though), and not friendly to all networks so I can still imagine they are not everyone's friend.

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Hmmm... the times I have SN2S on all cores saturates my CPU much better than CEP2 does. CEP2 underutilizes my CPU, so it's only 90-95% loaded. And CEP2 makes my CPU run a little bit cooler.

So I suppose it's YMMV when it comes to CEP2, kekeke...

EDIT: Count me into the challenge, too! Though, only for "sportsmanship"; don't include me into the prize drawing.

Yes, they do. On my laptop, CPU power usage increases by about 7% and temps go up about 5C. Given that it already does 82-85C running other projects, I never run CEP2 on it b/c that runs it so hot that it thermally throttles down to 1.1GHz at least half of the time (where obviously output isn't so good)

One of my machines has an AMD E1-1200 in it. Estimate time for one CEP2 WU is 100h 11m 48s. :shadedshu
(It's a work computer. They gave it to me as an "upgrade" over my 1.8GHz C2Dm laptop.)

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CEP2 wu's are tough on a rig sometimes. My opinion would be if you can't finish a wu within 24 hrs then consider adjusting the profile for that machine to avoid them. I ran into issues with Phenom II's getting errors and invalid results with them so I avoided them most of the time. The FX's and i7's currently in my rigs seem to do fine with them atm.